Ok, I hope I haven't missed anything, but I don't see this info in the forum already.
My 4.0 sport has some instrument cluster issues I can't explain.
It started right after my lift and tires. I expected the speedometer to be off, but it almost seemed sluggish, like the needle would stick sometimes. I might get it to read 50, then slow down, and it still reads 50. Then the next time I got to that speed(GPS speedo), it would only read 40. Usually if I drove at a consistent speed for a while, it would level out to where I'd expect it to be.
Moving forward over a year: now, after a bunch of repairs, and upgrades, the tachometer is acting up. Since I got it back from the shop, the tach seems to read high. At idle it's reading 1500RPMs, but the engine still sounds like it's idling normal. At speed, the tach is maybe 500-1000 higher than the charts say it should be for my gearing & tire size.
Latest issue I have yet to verify, but with the growing gauge issues, I'm assuming it could easily be related. Last week my alternator seized(I hate mud), so I replaced it. I guess I hadn't looked closely at the voltmeter in the instrument cluster between the repairs and replacing the alternator in my driveway between rain squalls. Looking at it now, it's only showing 12ish volts. Could be related to the alternator issue, but that's off topic.
As I said, I'll need to bust out my multimeter to verify the voltmeter is related, but am just curious if anyone has an idea as to what's going on in my instrument cluster.
My 4.0 sport has some instrument cluster issues I can't explain.
It started right after my lift and tires. I expected the speedometer to be off, but it almost seemed sluggish, like the needle would stick sometimes. I might get it to read 50, then slow down, and it still reads 50. Then the next time I got to that speed(GPS speedo), it would only read 40. Usually if I drove at a consistent speed for a while, it would level out to where I'd expect it to be.
Moving forward over a year: now, after a bunch of repairs, and upgrades, the tachometer is acting up. Since I got it back from the shop, the tach seems to read high. At idle it's reading 1500RPMs, but the engine still sounds like it's idling normal. At speed, the tach is maybe 500-1000 higher than the charts say it should be for my gearing & tire size.
Latest issue I have yet to verify, but with the growing gauge issues, I'm assuming it could easily be related. Last week my alternator seized(I hate mud), so I replaced it. I guess I hadn't looked closely at the voltmeter in the instrument cluster between the repairs and replacing the alternator in my driveway between rain squalls. Looking at it now, it's only showing 12ish volts. Could be related to the alternator issue, but that's off topic.
As I said, I'll need to bust out my multimeter to verify the voltmeter is related, but am just curious if anyone has an idea as to what's going on in my instrument cluster.
